Atlanta, Georgia (United States)

I was driving along I-20 West toward Atlanta, GA. At approximately 6:31PM, I witnessed what appeared to be 3 bright red balls of light in the western horizon. I thought it was odd, as the sky was overcast(no stars) and they seemed to be pulsing in and out. They moved across the sky from left to right, and right to left, in varying speeds. After about 10 minutes, 2 more appeared from the NW sky, and moved to join the other 3. The event occurred for the next 22 minutes, before I saw what looked like a helicopter approach from the north(I could see it's spot light). It must have spooked whatever they were, because when it approached, they vanished all of a sudden. Over the next 10 minutes, 3 more helicopters appeared in the area. They flew around in circles with their spot lights shining around. I only lost sight of them because I merged onto another HWY, and couldn't see them anymore.